Results 91 to 100 of about 20,545 (216)

Detection and Characterization of ESBL‐Producing and Carbapenem‐Resistant Klebsiella pneumoniae in Ornamental Birds and Their Surrounding Environments

open access: yesMicrobiologyOpen, Volume 15, Issue 3, June 2026.
Multidrug‐resistant ESBL‐ and carbapenem‐resistant Klebsiella pneumoniae were identified from ornamental birds, their handlers and surrounding environments, carrying key virulence and resistant genes, highlighting potential One Health transmission risks between animals, humans and the associated environments.
Md Abdullah Evna Hasan   +14 more
wiley   +1 more source

F4 fimbriae expressed by porcine enterotoxigenic Escherichia coli, an example of an eccentric fimbrial system?

open access: yes, 2004
An overwhelming number of infectious diseases in both humans and animals are initiated by bacterial adhesion to carbohydrate structures on a mucosal surface.
Cox, E.   +4 more
core   +1 more source

Structural insights into serine-rich fimbriae from Gram-positive bacteria. [PDF]

open access: yes, 2010
The serine-rich repeat family of fimbriae play important roles in the pathogenesis of streptococci and staphylococci. Despite recent attention, their finer structural details and precise adhesion mechanisms have yet to be determined.
Yuebin Li   +87 more
core   +1 more source

Adhesive threads of extraintestinal pathogenic Escherichia coli

open access: yesGut Pathogens, 2009
The ability to adhere to host surfaces is by far the most vital step in the successful colonization by microbial pathogens. Colonization begins with the attachment of the bacterium to receptors expressed by cells forming the lining of the mucosa.
Antão Esther-Maria   +2 more
doaj   +1 more source

Sex Determination in Sponges

open access: yesMolecular Reproduction and Development, Volume 93, Issue 6, June 2026.
ABSTRACT Sex determination in Porifera remains one of the least understood aspects of early metazoan biology despite the group's key phylogenetic position. Sponges display exceptional diversity in sexual systems—ranging from stable gonochorism to sequential hermaphroditism and sex reversal—yet lack morphological dimorphism and any discrete gonadal ...
Jose M. Lorente‐Sorolla, Ana Riesgo
wiley   +1 more source

Formation and dimerization of the phosphodiesterase active site of the Pseudomonas aeruginosa MorA, a bi-functional c-di-GMP regulator

open access: yes, 2014
Diguanylate cyclases (DGC) and phosphodiesterases (PDE) respectively synthesise and hydrolyse the secondary messenger cyclic dimeric GMP (c-di-GMP), and both activities are often found in a single protein.
Mikolajek, Halina   +5 more
core   +1 more source

Coordinate gene regulation by fimbriae-induced signal transduction

open access: yes, 2001
Fimbriae are thread-like polymers displayed in large amounts on the bacterial surface and used by many pathogens to attach to receptors on host tissue surfaces.
Klemm, P.   +3 more
core   +1 more source

Species‐Specific Optimisation and Environmental Regulation of Biofilm Formation in Enterobacter cloacae: Inhibitory Role of Glucose in Biofilm Development

open access: yesEnvironmental Microbiology Reports, Volume 18, Issue 3, June 2026.
This study demonstrates that mild salinity stress (1%–2% NaCl) significantly enhances biofilm formation in Enterobacter cloacae. Using a standardised 96‐well microtiter plate assay, we optimised in vitro biofilm quantification and classification, providing a reproducible framework for studying environmental and clinical biofilm development mechanisms ...
Srishti Singh   +6 more
wiley   +1 more source

Type 1 fimbriae-mediated collective protection against type 6 secretion system attacks

open access: yesmBio
Bacterial competition may rely on secretion systems such as the type 6 secretion system (T6SS), which punctures and releases toxic molecules into neighboring cells.
Margot Marie Dessartine   +4 more
doaj   +1 more source

Phosphorylated OmpR Is Required for Type 3 Fimbriae Expression in Klebsiella pneumoniae Under Hypertonic Conditions

open access: yesFrontiers in Microbiology, 2018
OmpR/EnvZ is a two-component system that senses osmotic signals and controls downstream gene expression in many species of Enterobacteriaceae. However, the role of OmpR/EnvZ in Klebsiella pneumoniae remains unknown.
Tien-Huang Lin   +7 more
doaj   +1 more source

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